QUANTUM-THEORY OF PHASE-CONJUGATE MIRRORS

被引:8
作者
BOCHOVE, EJ
机构
[1] Department of Physics, Texas Tech University, Lubbock, TX
关键词
D O I
10.1364/JOSAB.9.000266
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The vacuum field's role in the radiative properties of two-level atoms located externally to a phase-conjugate mirror (PCM) is investigated. The basic result of Gaeta and Boyd [Phys. Rev. Lett. 60, 2618 (1988)], that the PCM emits an average of R (where R is reflectivity) noise photons per mode of the radiation field, is modified. Stimulated emission of the combined PCM-atom system takes place when the atom is in its ground state; this emission is caused by a scattering-conjugation process of virtual photons. The expression for the power emitted by a system of N (N > 1) two-level atoms also contains terms that are the expectation values of products of two atomic raising or lowering operators in addition to the usual superradiant terms. The case N = 2 is solved exactly in the limit of a vanishing separation-to-wavelength ratio. The expectation values of individual and pair-product operators are derived from the Heisenberg equations of motion, and the solutions are classified according to the value of an integral of motion. When R < 1, the time evolution is characterized by four real-time constants, of which two are a complex-conjugate pair for R > 1, indicating relaxation by damped oscillations.
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收藏
页码:266 / 280
页数:15
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